And interest in her fantastic figure reached fever pitch a month ago as she presented the final of The Voice. Holly, 32, wore a ­plunging black lace dress that showcased Britain’s most talked-about chest.

There were a few dozen complaints but in the end Ofcom decided not to ­investigate. The star of This Morning, often described as Britain’s Sexiest Woman, can laugh it off with her husband of six years, TV producer Dan Baldwin.

Holly said of the attention her bust ­attracts: “None of that bothers us at all. Dan never gets jealous. They’re just boobs. We work ­together on Celebrity Juice and we have the most fun. It’s Dan’s show and I can hear him laughing in my ear.

“Actually, all the rude stuff that Keith Lemon says is kind of Dan’s fault,” she told the Sunday People

But what does she feel about being called a national pin-up? “Oh no, I can’t be that,” she said. “This could all be gone tomorrow.”

(Image: Lickerish)

There is so much more to Holly than her knockout looks.

She has been ­hosting ITV’s This Morning beside Phillip Schofield since 2009, anchors BBC1 reality show The Voice and stars on ITV2 comedy show Celebrity Juice.

Holly also has a clothing website and is ­carving a niche as a children’s book writer with her elder sister Kelly. And she won’t let her busy working schedule stop her son Harry, four, and ­daughter Belle, two, from having a ­normal and happy childhood.

The star said: “I’m happy to work really hard during the day but once it gets to a certain time I’m off. I have to be at home. I have a nanny but I always want to put the kids to sleep and have that last hour with them.

“Dan and I both have a similar outlook on our children and how we want their lives to be. Creating a home environment is really important and I try to make it as normal as possible. We all love being together and ­doing stuff at the weekend. That’s our time.

“I always knew I wanted a family. I couldn’t wait to have a baby and was really lucky to meet Dan when I did so we could start early and enjoy it for longer.

“I’ve always wanted three ­children but things are a bit busy right now so we’ll see.”

Holly is full of praise for her This Morning co-presenter and pal Phillip, 51.

She said: “Phil is one of my best friends. He is inspiring on so many levels.

“Professionally he’s a master of TV but also, on a personal level, the way he is with his wife and daughters is so beautiful.

“They’re really funny, polite girls. I look at him and think, ‘Right, you’ve done all of that. I’d like to be like that too.’”

Even before the furore over her cleavage last month, Holly has had to fight against being labelled a “bimbo” and cutting ­accusations she has “no talent”.

(Image: Rex)

Also in June she and Dan, 37, were ­accused of noisy and drunken ­behaviour in their quiet South West London neighbourhood.

Holly said: “I don’t take much notice of these things. If you don’t let it bother you it can’t hurt you.

“There’ll be really lovely articles and there will be really horrible ones. If you take all of them at the same level then you don’t get too upset or too big-headed, whichever way the pendulum swings.

“It’s just not important to me. But if my mum Linda had said something like that I would have been heartbroken because I care about her and value her.”

Despite a struggle with dyslexia, Holly has added yet another string to her bow – writing. She and her sister Kelly began penning children’s fiction books and have already been a huge success.

The pair have just ­completed book No2 – School for Stars: Second Term at L’Etoile. Not only are they enjoying the writing but they relish working together.

Holly said: “My sister and I make a great team on our books because we’d come up with the ideas and the story together and she’d go away and write it. Then she’d read it to me and we’d discuss it and make changes.” Is there any sibling ­rivalry? “Kelly has never felt in my shadow because we have always been in such ­different worlds,” Holly said.

“At school Kelly was the high achiever. We were always happy for whatever the other had. It was never competitive.

“I idolised her when I was growing up and wanted to be just like her. One of my favourite memories ever was when she went off to university she let me come and stay. I just couldn’t believe you were allowed to go out every night and there were no parents around.”

Holly and Kelly Willoughby’s new book School for Stars: Second Term at L’Etoile is out now, £4.99, by Orion Children’s Books.